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https://issues.apache.org/jira/browse/SOLR-8291?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15009026#comment-15009026
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Joel Bernstein commented on SOLR-8291:
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Thanks, I was going to ask you add those log lines.
This is an odd bug. Take a look at IndexSearch line 803. This is the method
that iterates the segments and calls getLeafCollector. If you can add some
logging in here that might give us some interesting information.
I'm continuing to review code to see how this could be occurring.
> Get NPE during calling export handler
> -------------------------------------
>
> Key: SOLR-8291
> URL: https://issues.apache.org/jira/browse/SOLR-8291
> Project: Solr
> Issue Type: Bug
> Components: SolrCloud
> Affects Versions: 5.2.1
> Reporter: Ray
>
> Get NPE during calling export handler, here is the stack trace:
> at org.apache.lucene.util.BitSetIterator.<init>(BitSetIterator.java:58)
> at
> org.apache.solr.response.SortingResponseWriter.write(SortingResponseWriter.java:138)
> at
> org.apache.solr.response.QueryResponseWriterUtil.writeQueryResponse(QueryResponseWriterUtil.java:53)
> at
> org.apache.solr.servlet.HttpSolrCall.writeResponse(HttpSolrCall.java:727)
> at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:459)
> at
> org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:227)
> at
> org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:196)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:274)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:242)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:274)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:242)
> at
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275)
> at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161)
> at
> org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:181)
> at
> org.jboss.modcluster.catalina.CatalinaContext$RequestListenerValve.event(CatalinaContext.java:285)
> at
> org.jboss.modcluster.catalina.CatalinaContext$RequestListenerValve.invoke(CatalinaContext.java:261)
> at
> org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:88)
> at
> org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:100)
> at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:159)
> at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
> at
> org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158)
> at
> org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:567)
> at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
> at
> org.jboss.web.tomcat.service.request.ActiveRequestResponseCacheValve.invoke(ActiveRequestResponseCacheValve.java:53)
> at
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:362)
> at
> org.apache.coyote.ajp.AjpAprProcessor.process(AjpAprProcessor.java:489)
> at
> org.apache.coyote.ajp.AjpAprProtocol$AjpConnectionHandler.process(AjpAprProtocol.java:452)
> at
> org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:2019)
> at java.lang.Thread.run(Thread.java:745)
> It seems there are some FixedBitSet was set to null
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